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    • 62. 发明授权
    • Color image forming apparatus having misregistration correction
    • 具有不对准校正的彩色图像形成装置
    • US5768671A
    • 1998-06-16
    • US528497
    • 1995-09-14
    • Kenichi KomiyaKoji TanimotoNaoaki Ide
    • Kenichi KomiyaKoji TanimotoNaoaki Ide
    • G03G15/00G03G15/01G03G21/00H04N1/50
    • H04N1/506G03G15/0194G03G2215/0119G03G2215/0161
    • An image forming apparatus includes plural latent image forming units for forming latent images on plural image carriers, plural developing units for developing the latent image formed on the image carriers and plural transfer units for transferring the color images developed on the image carriers to an image receiving medium conveyed by a medium support member. This image forming apparatus also includes a first detector for detecting a test pattern. This first detector has a light projecting portion and a light receiving portion which is arranged in parallel with the running direction of the medium support member. The image forming apparatus has a computing unit which computes misregistration of color images developed and transferred onto one of the medium support member and the image receiving medium based on a difference between a detection result by the detector and a threshold value. The misregistration of color images are corrected based on the results of computation by the computing unit. This first detector may be positioned opposite a vibration control roller. Additionally, a second detector detects a variation of a quantity of light reflected from the medium support member and the threshold value is changed accordingly, or the test pattern is prevented from being formed on a contaminated section of the support member.
    • 图像形成装置包括:多个潜像形成单元,用于在多个图像载体上形成潜像;多个显影单元,用于显影形成在图像载体上的潜像;以及多个转印单元,用于将在图像载体上显影的彩色图像转印到图像接收 介质由介质支撑构件输送。 该图像形成装置还包括用于检测测试图案的第一检测器。 该第一检测器具有与介质支撑构件的行进方向平行布置的光投射部和光接收部。 图像形成装置具有计算单元,该计算单元基于检测器的检测结果与阈值之间的差异来计算显影并转印到介质支撑构件和图像接收介质之一上的彩色图像的对准。 基于计算单元的计算结果来校正彩色图像的对准。 该第一检测器可以与振动控制辊相对。 此外,第二检测器检测从介质支撑构件反射的光量的变化,并且相应地改变阈值,或者防止测试图案形成在支撑构件的污染部分上。
    • 63. 发明授权
    • Drive circuit for brushless motor
    • 无刷电机驱动电路
    • US5287044A
    • 1994-02-15
    • US968387
    • 1992-10-29
    • Hirokazu IzawaKenichi Komiya
    • Hirokazu IzawaKenichi Komiya
    • H02P6/00H02P6/06H02P6/08H02P7/14H02P6/02
    • H02P6/085H02P6/06H02P6/34
    • A drive circuit for a brushless motor includes position detectors for detecting a rotational position of a rotor of the brushless motor, thereby generating position detection signals. A plurality of amplifiers have respective transistors at least in its output stage and feed an electric power to stator windings of the brushless motor through the transistors of the output stage in a timing in accordance with the position detection signals from the position detectors respectively. Each amplifier has an amplification degree varied based on a speed control signal. A voltage detector detects an output voltage of each amplifier. A power supply adjusting device controls a power supply voltage applied to each amplifier based on a detection voltage of the voltage detector.
    • 用于无刷电动机的驱动电路包括用于检测无刷电动机的转子的旋转位置的位置检测器,从而产生位置检测信号。 多个放大器至少在其输出级具有相应的晶体管,并且根据来自位置检测器的位置检测信号的定时,通过输出级的晶体管将电力馈送到无刷电动机的定子绕组。 每个放大器具有基于速度控制信号而变化的放大度。 电压检测器检测每个放大器的输出电压。 电源调节装置基于电压检测器的检测电压来控制施加到每个放大器的电源电压。
    • 70. 发明申请
    • APPARATUS, METHOD AND PROGRAM FOR IMAGE FORMING
    • 用于图像形成的装置,方法和程序
    • US20080225905A1
    • 2008-09-18
    • US11685415
    • 2007-03-13
    • Yuji InagawaKoji TanimotoKenichi KomiyaDaisuke Ishikawa
    • Yuji InagawaKoji TanimotoKenichi KomiyaDaisuke Ishikawa
    • H01S3/10
    • H04N1/4015H04N1/40037
    • An image forming apparatus includes a scanning unit that deflects and scans a laser beam emitted from a laser beam source, an optical system that guides the laser beam onto a photoconductive drum, a storing unit that stores plural correction patterns that give a series of correction values for correcting an amount of laser beams in one scanning, a selecting unit that selects a correction group including at least two kinds of correction patterns out of the stored correction patterns, a switching unit that switches the at least two kinds of correction patterns belonging to the selected group at predetermined timing, a correcting unit that corrects, on the basis of the correction patterns switched by the switching unit, an amount of laser beams being scanned, and a printing unit that prints, on one medium, plural images formed on the photoconductive drum by laser beams corrected by the respective correction patterns.
    • 图像形成装置包括:扫描单元,其偏转和扫描从激光束源发射的激光束;将激光束引导到感光鼓上的光学系统;存储单元,其存储提供一系列校正值的多个校正图案 用于在一次扫描中校正激光束的量;选择单元,其从所存储的校正图案中选择包括至少两种校正图案的校正组;切换单元,其将所述至少两种校正模式 选择组,校正单元,其基于由切换单元切换的校正图案校正被扫描的激光束的量;以及打印单元,其在一个介质上打印形成在光电导上的多个图像 通过由相应的校正图案校正的激光束进行滚筒。